Different Single-Photon Response of Wide and Narrow Superconducting 
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 Strips

Korneeva, Yu. P.; Manova, N. N.; Florya, Irina; Mikhaı̆lov, M. Yu.; Dobrovolskiy, Oleksandr V.; Корнеев, А. А.; Vodolazov, D. Yu.

doi:10.1103/physrevapplied.13.024011

Cited by 55 publications

(32 citation statements)

References 31 publications

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“…To calculate j dep C , we used a diffusion coefficient D = 0.47 cm 2 s −1 , experimentally obtained for MoSi film with similar thickness and critical temperature 20 . We found the ratio to be in the range 0.5-0.63 for both 3 and 5 nm thick devices.…”

mentioning

confidence: 99%

Large-area microwire MoSi single-photon detectors at 1550 nm wavelength

Charaev

Morimoto

Dane

et al. 2020

Applied Physics Letters

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We demonstrate saturated internal detection efficiency at 1550 nm wavelengths for meander-shaped superconducting nanowire single-photon detectors made of 3 nm thick MoSi films with widths of 1 and 3 µm, and active areas up to 400 by 400 µm 2 . Despite hairpin turns and a large number of squares (up to 10 4 ) in the device, the dark count rate was measured to be ∼10 3 cps at 99% of the switching current. This value is about two orders of magnitude lower than results reported recently for short MoSi devices with shunt resistors. We also found that 5 nm thick MoSi detectors with the same geometry were insensitive to single near-infrared photons, which may be associated with different levels of suppression of the superconducting order parameter. However, our results obtained on 3 nm thick MoSi devices are in a good agreement with predictions in the frame of a kinetic-equation approach.

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confidence: 99%

Large-area microwire MoSi single-photon detectors at 1550 nm wavelength

Charaev

Morimoto

Dane

et al. 2020

Applied Physics Letters

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“…), geometrical imperfections from lithography and patterning, and topographical disruptions to the film continuity (such as particles pre-existing on the substrate prior to superconducting film deposition). However, recent developments in superconducting detector design and fabrication [29][30][31] have enabled few-micron-wide superconducting detectors that are potentially much more robust to many of these issues. The large dimensions of these devices are amenable to fabrication with conventional photolithography, facilitating the parallel production of many devices at low cost.…”

Section: Large Active Areasmentioning

confidence: 99%

Recent advances in superconducting nanowire single-photon detector technology for exoplanet transit spectroscopy in the mid-infrared

Wollman

Verma

Walter

et al. 2021

J. Astron. Telesc. Instrum. Syst.

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The Origins Space Telescope mission concept includes an exoplanet transit spectrometer that requires detector arrays with ultrahigh pixel-to-pixel stability. Superconducting nanowire single-photon detectors, or SNSPDs, have the potential to meet these stringent stability requirements due to their digital-like output. Traditionally used for applications at near-IR telecom wavelengths, SNSPDs have demonstrated near-unity detection efficiencies, ultralow dark-count rates, and high dynamic ranges. Until recently, however, SNSPD operation at the mid-infrared (mid-IR) wavelengths of interest for Origins had not been demonstrated, and SNSPD formats were limited to small arrays and active areas. Recent advances in SNSPD fabrication techniques have pushed SNSPD sensitivity to wavelengths beyond 7 μm and have enabled millimeter-scale active areas and kilopixel arrays. We report here on this progress and the outlook toward developing arrays of ultrastable superconducting nanowire single-photon detectors for mid-IR astronomy applications. © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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“…Remarkably, Nb-C-FIBID exhibits a rare combination of properties: weak volume pinning, close-to-depairing critical current and fast heat removal from heated electrons. This provides access to investigations of vortex dynamics at >10 km/s vortex velocities [ 135 ] and renders Nb-C-FIBID as a candidate material for single-photon detectors, with properties comparable to NbN and MoSi thin films [ 136 , 137 ]. In addition, the direct-write capability of FIBID and FEBID should be fortunate for on-chip and on-fiber detector integration in circuits for quantum information processing.…”

Section: Febid Nanostructures For 3d Nanomagnetismmentioning

confidence: 99%

Writing 3D Nanomagnets Using Focused Electron Beams

et al. 2020

Self Cite

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Focused electron beam induced deposition (FEBID) is a direct-write nanofabrication technique able to pattern three-dimensional magnetic nanostructures at resolutions comparable to the characteristic magnetic length scales. FEBID is thus a powerful tool for 3D nanomagnetism which enables unique fundamental studies involving complex 3D geometries, as well as nano-prototyping and specialized applications compatible with low throughputs. In this focused review, we discuss recent developments of this technique for applications in 3D nanomagnetism, namely the substantial progress on FEBID computational methods, and new routes followed to tune the magnetic properties of ferromagnetic FEBID materials. We also review a selection of recent works involving FEBID 3D nanostructures in areas such as scanning probe microscopy sensing, magnetic frustration phenomena, curvilinear magnetism, magnonics and fluxonics, offering a wide perspective of the important role FEBID is likely to have in the coming years in the study of new phenomena involving 3D magnetic nanostructures.

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Different Single-Photon Response of Wide and Narrow Superconducting MoxSi1−x Strips

Cited by 55 publications

References 31 publications

Large-area microwire MoSi single-photon detectors at 1550 nm wavelength

Large-area microwire MoSi single-photon detectors at 1550 nm wavelength

Recent advances in superconducting nanowire single-photon detector technology for exoplanet transit spectroscopy in the mid-infrared

Writing 3D Nanomagnets Using Focused Electron Beams

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